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No. 425,449.- Pat'enftea Apr.' 15, 1890,

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UNITED STATES PATENT EEicE.

GEORGE S. NICKIIM, OF DAYTON, OHIO, ASSIGNOR TO THE DAYTON FAN AND MOTORCOMPANY, OF SAME PLACE.

FAN ATTACH M ENT.

SPECIFICATION forming part of Letters Patent No. 425,449, dated April15, 1890.

Application filed February 16 1889. Serial No. 300,185. (No model.)

To @ZZ whom it may concern:

Beit known that I, GEORGE S. NICKUM, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Fan Attachments, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying' drawings, forming part of thisspeciiication.

My invention relates to that class of rotary fans carried at the lowerend of revolving spindles j ournaled in hanger brackets secured to theceiling 5 and it has for its object t5 the improvement in theconstruction of the attaching and journal hearings and other parts, bywhich simplicity of construction and a minimum of `friction in thebearing parts are obtained.

The novelty of my invention will beherein set forth, and specificallypointed out in the claims.

In the accompanying drawings, Figure lis a perspective View of a fanembodying my invention. Fig. 2 is an enlarged axial section through thespindle and its attachments. Fig. 3 is an enlarged sectional planthrough the dotted line a; of Fig. 2. Fig. 4 is a corresponding viewrepresenting a modication in the construction of the fan-hub plug.

The same letters are used to indicate identical parts in all the ignres.

A is the hangerhracket, in this instance composed of three arms,attached at their upper ends to a plate B, secured to the ceiling andhaving inserted through and secured in its lower tubular portion aninternallythreaded collar a, into the opposite sides of which twoportions of gas-pipe or other tubes Z) are screwed and extendvertically. Upon the upper and lower ends of the pipes h are screwedbearingcaps C D, with bores through -their ends of less diameter thanthe internal diameter of the pipes b. The driving-spindleE for revolvingthe fans is inserted through and snugly fits thc bores inthe caps CD,'with out Contact with the pipes 11, and has secured,

by means of a set-screw c, or otherwise, upon its upper projecting endthe grooved driving-pulley F, formed with a lower boss d, to tit uponthe top of the cap C, or upon balls g,

filling an annular groove in the'cap O or boss (l, or both. The spindleE has secured upon its lower projecting end the fan-hub G by means of aset-screw G', or other adjustable fastening, said hub being providedwith a boss e, bearing slightly against the lower end of the cap D. Inthis way the Weight of the fanspindle is borne entirely upon the cap C,and the friction is reduced to a minimum, while at the same time it isheld at both ends in bearings and cannot have end-play, any Wear beingreadily compensated for by adjusting the fan hub or pulley, as Willhereadily understood.

The fans H are composed of paper, muslin, or other material, eachsecured upon a metal frame composed of the central shaft I, to which thehoop .l is secured in any suitable manner. i

The hub G is a hollow shell, open at its bottom and having projectingradially and horizontally from it as many tubular bearinging-sockets 7Las there are fans-in this instance four. These sockets are cut away onone side to admit spiral springs i and collars f, and the inner roundedends of the fanshafts I are inserted through the outer heads ot thesockets, through the springs and collars, and through openings in theshell of the hub, into which they project at equal lengths and bearagainst an inclined or wedging surface or. surfaces on a plug` K,screwed or otherwise made vertically adjustable upon the lower end ofthe spindle E, as shown in Figs. 1 and 3, and preferably having itslower end formed into a drip-cup l. The collarsf are locked to theshafts I by set-screws or pins m, inserted through diagonal or cam slotsn in the socket-s 72.. It results from this construction that byscrewing up the plug K the fan-shafts are driven outward by the Wedgeaction of the plug, and at the same time are turned simultaneously bythe slots n and screws m to angle the fans, While upon lowering the plugthe springs f,bearing against the socket h and collars f, force theshafts in again and reverse the previous movement of the fans, as willbe readily understood. In this manner all the fans may be angledsimultaneously to any desired position.

In Fig. 4. I have shown a modification in IOO the construction, by whichthe fans are moved positively in and out by the plug, which need not beconical or have vertical surfaces or adjustment. Here the plug is flaton top and is provided with projections o, having inclined surfaces,which engage annular grooves p in the fan-shafts, so that by turning theplug, without raising or lowering it, the fanspindles are moved in orout and the fans are angled to any position desired.

Where common gas-pipe is used for the tubes b and a neat finish isdesired, said tubes may be covered by plated tubes j, surrounding thetubes b and clamped between the caps C D and collar a.-

I is the usual driving-cord for revolving the spindle and fans.

Having thus fully described my invention, I claiml. In a fan attachment,the combination, with the hanging-bracket support, the tubular shaftformed in two parts, mounted rigidly therein, with one part projectingabove and the other below the same, and the bearing-caps mounted rigidlyon the ends of said shaft, with bores of less diameter than the shaft,of the driving spindle extending through the shaft and taking itsbearings in the caps, the driving-pulley secured to the upper end of thespindle above the shaft, with the friction-boss resting on the uppercap, and the fan-hub secured to the spindle below the shaft,substantially as described.

i 2.v In a fan attachment, the combination, with the hanging-bracketsupport, the collar removably secured therein, the tubular shaft mountedrigidly in the collar and extending above and below the same, with thebearingcaps mounted on the ends of the shaft, of the drivin g-spindlepassing through the shaft and taking its bearings in the caps, thedrivingpulley on the spindle above the shaft, with the boss resting onthe cap, and the fan-hub mounted on the spindles below the shaft,substantially as described.

3. In a fan attachment7 the combination, with the hanging-bracketsupport, the collar removably secured therein, the tubular shaft mountedin said collar, thc screw-threaded caps on the ends of said shaft, andthe tubular casings surrounding the shaft and confined and held inposition between the caps and col- Y lar, as described, of thedriving-spindle passing through the shaft and taking its bearings in thecaps, and the driving-pulley and fanhub mounted on the spindle atopposite ends of the shaft, substantially as described.

4. In a rotary fan attachment, the combination, with thedriving-spindle, the fanshaft hub secured thereon, and the fan-shaftsupported and carried by said hub, of the inclined surface engaging theend of said shaft to turn it on its longitudinal axis, substantially asdescribed.

5. In a rotary fan attachment, the combination, with .thedriving-spindle and hollow shaft-hub secured thereon, of the fanshaftjournaled in said hub and projecting into the central cavity, thebearingsocket having the cam-slot n, the pin m, and the adjustable plugwithin the hub, having the inclined surface thereon engaging the end ofthe fan-shaft to project it and cause its par-- tial rotation,substantially as described.

6. The combination, with the spindle E, hollow hub G, provided withsocket h,having the slots n, andthe fan-shafts inserted through saidsockets and having pins passed through said slots, of a plug free toturn in the hub and engaging the fan-shafts, whereby upon turning saidplug the fans are given longitudinal movement and turned on their axis,

substantially as described.

7. The combination, with the spindle E,

.hollow hub G, provided with socket h, having slot n therein, thefan-shaft inserted through said socket and having the collar f,set-screw m, and spring t', said set-screw being inserted through theslot n and. collar f, of the plug K, mounted 'on the spindle E andhaving an inelined surface engaging the inner end of the fan-shaft,substantially as and for the purpose specified.

GEORGE S. NIOKUM.

